SAFERTOS^®

Design Assurance

SAFERTOS^® is tailored to your specific processor/compiler combination, and delivered with full source code and our Design Assurance Pack (DAP). The DAP gives you complete transparency over the full Design Life Cycle, and illustrates the exceptional high quality of our RTOS product. The DAP ensures:

• No retesting on target hardware is required
• Easy installation and integration into your development environment
• Reduced development costs and improved time to market
• Smooth path to certifying SAFERTOS^® within an application

A Safety Systems Company

As WITTENSTEIN high integrity systems are first and foremost a Safety Systems Company, we can offer that all important extra service:

• Safety Critical design review services
• Consultancy on the safety certification process
• SAFERTOS^® training including safety related requirements
• Full BSP solutions

Easier Certification

Using our extensive Safety Critical design experience we have made certifying SAFERTOS^® integrated within a product an easy and hassle-free process. Contained within the DAP is the all-important Safety Manual. The Safety Manual:

• Provides clear, step-by-step instructions for installing and integrating SAFERTOS^® into your development environment
• Helps generate the required evidence for your auditors, demonstrating that the correct process has been followed
• Eliminates the need to re-test SAFERTOS^® on your target hardware
• Delivers a reliable and certifiable foundation for your safety-critical development

Reducing Risks

In many safety critical applications the real time operating system (RTOS) is the most critical component. The RTOS not only schedules the functionality of the software, it also schedules the operation of Safety Monitors and Safety Functions. A failure in the RTOS will most likely compromise the Safety Case of the complete system. SAFERTOS^® has been designed specifically for the safety sector, with key features that include:

• Deterministic, priority-based scheduling as a primary safety requirement
• Rigorous design focus to ensure predictable, real-time behaviour at all times
• Independent certification to IEC 61508-3 SIL 3, the highest possible SIL level for a software-only component
• Proven reliability across multiple platforms with a 100% success rate in certifying SAFERTOS^® in the final product

The SAFERTOS^® Story

Since 2007 the primary focus has been the development and supply of mission and safety critical RTOS and middleware components. WHIS engineers took the FreeRTOS functional model, exposed it to a full HAZOP, identified all areas of weakness within the functional model and API, mitigated all areas of weakness, and took the resulting requirements set through an IEC 61508 SIL 3 development life cycle, the highest possible for a software only component.

In doing so we created SAFERTOS^®: the renowned safety certified RTOS that delivers superior performance and safety critical dependability whilst consuming minimal resources. The success of these endeavours can be judged by the fact SAFERTOS^® was independently certified on the first iteration by TÜV SÜD back in 2007.

SAFERTOS^® has continuously evolved since its initial creation and the list of supported processors and toolsets is constantly expanding. SAFERTOS^® includes, among other features:

• Task Isolation and Separation;
• Ultra-Low Power Mode;
• OSEK API Wrapper;
• A range of Safety Plugins.